PSI - Issue 77

L.P. Borrego et al. / Procedia Structural Integrity 77 (2026) 681–687

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Fig. 2. (a) FEA results and (b) final topology.

Fig. 3. Comparison between cranksets produced by the Miranda® brand (top) and by L-PBF (bottom).

Following the manufacture of the specimens, a post-processing heat treatment was applied to only three samples. The heat treatment consisted of a low-temperature stress relieving at 250 ºC for 2 hours, followed by water quenching. The fatigue tests were performed on a test bench specifically developed for this purpose, based on the NP EN ISO 4210-8:2019 standard (2019). Figure 4a shows a photograph of the test bench, and Figure 4b illustrates the standard suggestion.